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Research And Development Arrangement with Federal Government, Tax Credit Annual Offset, Amount

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Research And Development Arrangement with Federal Government, Tax Credit Annual Offset, Percent

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Research And Development Expenditures Tax Credit, Connected Parties Maximum Percentage of Total Claim

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Research And Development Tax Credit, Cap on Payable Credit Claims

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Research And Development Tax Credit, Cash Rebate Percent

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Research And Development Tax Credit, Total Aid Claimable

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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

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Amount of lessee's right to use underlying asset under operating lease.

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Cash received on stock transaction after deduction of issuance costs.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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Summary of Significant Accounting Policies - Narrative (Details) £ in Thousands, € in Millions		12 Months Ended
	Aug. 28, 2019 GBP (£)	Dec. 31, 2022 USD ($) region	Dec. 31, 2022 GBP (£) region	Dec. 31, 2022 EUR (€) region	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Jan. 01, 2021 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Consideration received on transaction \| £	£ 25,000
Number of geographic regions \| region		2	2	2
Expected dividend yield (in percent)		0.00%	0.00%	0.00%	0.00%	0.00%
Operating lease right-of-use assets		$ 2,006,000			$ 3,696,000		$ 1,000,000
Operating lease liabilities - current		1,510,000			2,235,000		$ 1,000,000
Foreign exchange gains		821,000			1,990,000	$ (11,702,000)
Accrued interest and penalties related to unrecognized tax benefits		$ 0			$ 0	$ 0
Maximum qualifying research and development expenditures with connected parties, percent		15.00%	15.00%	15.00%
United Kingdom Research and Development Tax Credit Regime, Small or Medium-Sized Enterprises (SME)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cash rebate percent (in percent)		33.35%	33.35%	33.35%
Total aid claimable (in Euros) \| €				€ 7.5
Cap on payable claims (in GBP) \| £			£ 20
United Kingdom Research and Development Tax Credit Regime
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cash rebate percent (in percent)		21.67%	21.67%	21.67%
Annual offset amount (in GBP) \| £			£ 5,000
Percentage of taxable profits (in percent)		50.00%	50.00%	50.00%